make pip work when current or parent dir is given: 'pip install .' and 'pip install ..'

pip/util.py

@@ -189,6 +189,8 @@ def is_filename(name):
     if (splitext(name)[1].lower() in ('.zip', '.tar.gz', '.tar.bz2', '.tgz', '.tar', '.pybundle')
         and os.path.exists(name)):
         return True
+    if name in (os.path.curdir, os.path.pardir):
+        return True
     if os.path.sep not in name and '/' not in name:
         # Doesn't have any path components, probably a requirement like 'Foo'
         return False

tests/test_basic.py

@@ -1,4 +1,3 @@
-
 from os.path import abspath, join, dirname, pardir
 from test_pip import here, reset_env, run_pip, pyversion, lib_py
 
@@ -132,3 +131,24 @@ def test_vcs_url_urlquote_normalization():
     result = run_pip('install', '-e', 'bzr+http://bazaar.launchpad.net/~django-wikiapp/django-wikiapp/release-0.1#egg=django-wikiapp', expect_error=True)
     assert 'pip-log.txt' not in result.files_created, result.files_created['pip-log.txt'].bytes
 
+def test_install_curdir():
+    """
+    Test installing current directory ('.').
+
+    """
+    reset_env()
+    run_from = abspath(join(here, 'packages', 'FSPkg'))
+    result = run_pip('install', '.', run_from=run_from, expect_error=False)
+    assert (lib_py + 'site-packages/fspkg') in result.files_created, str(result.stdout)
+    assert (lib_py + 'site-packages/FSPkg-0.1dev-py%s.egg-info' % pyversion) in result.files_created, str(result)
+
+def test_install_pardir():
+    """
+    Test installing parent directory ('..').
+
+    """
+    reset_env()
+    run_from = abspath(join(here, 'packages', 'FSPkg', 'fspkg'))
+    result = run_pip('install', '..', run_from=run_from, expect_error=False)
+    assert (lib_py + 'site-packages/fspkg') in result.files_created, str(result.stdout)
+    assert (lib_py + 'site-packages/FSPkg-0.1dev-py%s.egg-info' % pyversion) in result.files_created, str(result)

tests/test_pip.py

@@ -37,7 +37,7 @@ def reset_env(environ=None):
         environ = clear_environ(environ)
         environ['PIP_DOWNLOAD_CACHE'] = download_cache
     environ['PIP_NO_INPUT'] = '1'
-    environ['PIP_LOG_FILE'] = './pip-log.txt'
+    environ['PIP_LOG_FILE'] = os.path.join(base_path, 'pip-log.txt')
     environ['PYTHONPATH'] = os.path.abspath(os.path.join(__file__, os.path.pardir, os.path.pardir))
     env = TestFileEnvironment(base_path, ignore_hidden=False, environ=environ)
     env.run(sys.executable, '-m', 'virtualenv', '--no-site-packages', env.base_path)
@@ -48,7 +48,13 @@ def reset_env(environ=None):
     env.run('mkdir', 'src')
 
 def run_pip(*args, **kw):
-    args = (sys.executable, '-c', 'import pip; pip.main()', '-E', env.base_path) + args
+    # Run pip from a specific directory
+    if 'run_from' in kw:
+        run_from = kw['run_from']
+        del kw['run_from']
+    else:
+        run_from = base_path
+    args = (sys.executable, '-c', 'import os, pip; os.chdir(%r); pip.main()' % run_from, '-E', env.base_path) + args
     #print >> sys.__stdout__, 'running', ' '.join(args)
     result = env.run(*args, **kw)
     return result